scholarly journals Recent progress in enzymatic protein labelling techniques and their applications

2018 ◽  
Vol 47 (24) ◽  
pp. 9106-9136 ◽  
Author(s):  
Yi Zhang ◽  
Keun-Young Park ◽  
Kiall F. Suazo ◽  
Mark D. Distefano
Keyword(s):  
Recent Progress ◽  
Diverse Range ◽  
Protein Labelling ◽  
Enzymatic Labelling

This review describes recent progress in employing enzymatic labelling techniques to modify proteins for a diverse range of applications.

Chemistry of endophytes: patterns and diversity

1999 ◽  
Vol 7 ◽  
pp. 85-94
Author(s):  
G.A. Lane
Keyword(s):  
Biological Activity ◽  
Perennial Ryegrass ◽  
Chemical Ecology ◽  
Tall Fescue ◽  
Ergot Alkaloid ◽  
Recent Progress ◽  
Ergot Alkaloids ◽  
Diverse Range ◽  
Pasture Grasses ◽  
Significant Factors

Neotyphodium spp. fungi in pasture grasses synthesise a diverse range of metabolites. In this report, recent progress in extending knowledge of the diversity of endophyte metabolites is reviewed, in particular the elucidation of indole-diterpenes and ergot alkaloids. Some 20 indole-diterpenes have been identified from N. lolii-infected perennial ryegrass, and several ergot alkaloids additional to ergovaline have been identified in perennial ryegrass and other grasses infected with Neotyphodium spp. endophytes. While lolitrem B, ergovaline, and peramine remain significant factors in understanding the biological activity of N. loliiinfected perennial ryegrass, a more complex and complete view of endophyte chemical ecology must now be developed. Keywords: chanoclavine-I, dehydroergovaline, endophyte, ergine, ergot alkaloid, indolediterpene, Neotyphodium spp., perennial ryegrass, tall fescue

scholarly journals Recent Advances in the Generation of Nitrilium Betaine 1,3-Dipoles

Synthesis ◽  
2021 ◽  
Author(s):  
Craig Jamieson ◽  
Keith Livingstone ◽  
Gemma Little
Keyword(s):  
Organic Chemistry ◽  
Recent Progress ◽  
Materials Science ◽  
Short Review ◽  
High Reactivity ◽  
Natural Product Synthesis ◽  
Hypervalent Iodine ◽  
Diverse Range ◽  
Nitrile Imines

AbstractNitrilium betaine 1,3-dipoles are ubiquitous reagents in organic chemistry, with applications ranging from natural product synthesis to materials science. Given the high reactivity of these zwitterionic motifs, they are invariably generated in situ from a suitable precursor, prior to use. This short review summarises the recent progress in the development of modern approaches towards the formation of these 1,3-dipoles, and their applications within a diverse range of fields.1 Introduction2 Nitrile Ylides2.1 2H-Azirine Rearrangement2.2 Addition of Nitriles to Carbenes3 Nitrile Imines3.1 2,5-Tetrazole Thermolysis3.2 2,5-Tetrazole Photolysis3.3 Diaryl Sydnone Photolysis4 Nitrile Oxides4.1 Hypervalent Iodine4.2 The Nitroso Radical4.3 Green Chemistry Approaches4.4 Other Approaches5 Conclusions

Electron-Mirror Microscopic Aspects of Ferroelectric Domains of BaTiO3 And Ca2Sr (C2H5CO2)6

1970 ◽  
Vol 28 ◽  
pp. 478-479
Author(s):  
Teruo Someya ◽  
Jinzo Kobayashi
Keyword(s):  
Surface Layer ◽  
Electric Fields ◽  
Quantitative Study ◽  
Recent Progress ◽  
Ferroelectric Domain ◽  
Resolving Power ◽  
Surface Pattern ◽  
Crystal Surfaces ◽  
One Dimensional ◽  
Ferroelectric Domains

Recent progress in the electron-mirror microscopy (EMM), e.g., an improvement of its resolving power together with an increase of the magnification makes it useful for investigating the ferroelectric domain physics. English has recently observed the domain texture in the surface layer of BaTiO3. The present authors ) have developed a theory by which one can evaluate small one-dimensional electric fields and/or topographic step heights in the crystal surfaces from their EMM pictures. This theory was applied to a quantitative study of the surface pattern of BaTiO3).

The Nature of Oxide Surfaces: Topographic and Electronic Structure

1993 ◽  
Vol 51 ◽  
pp. 966-967
Author(s):  
Dawn A. Bonnell ◽  
Yong Liang
Keyword(s):  
Transition Metal Oxides ◽  
Electronic Structures ◽  
Recent Progress ◽  
Spatial Localization ◽  
Level Of Detail ◽  
Scanning Tunneling ◽  
Oxide Surfaces ◽  
Tunneling Microscopy ◽  
Considerable Effort ◽  
Complete Understanding

Recent progress in the application of scanning tunneling microscopy (STM) and tunneling spectroscopy (STS) to oxide surfaces has allowed issues of image formation mechanism and spatial resolution limitations to be addressed. As the STM analyses of oxide surfaces continues, it is becoming clear that the geometric and electronic structures of these surfaces are intrinsically complex. Since STM requires conductivity, the oxides in question are transition metal oxides that accommodate aliovalent dopants or nonstoichiometry to produce mobile carriers. To date, considerable effort has been directed toward probing the structures and reactivities of ZnO polar and nonpolar surfaces, TiO2 (110) and (001) surfaces and the SrTiO3 (001) surface, with a view towards integrating these results with the vast amount of previous surface analysis (LEED and photoemission) to build a more complete understanding of these surfaces. However, the spatial localization of the STM/STS provides a level of detail that leads to conclusions somewhat different from those made earlier.

Functional amyloid: widespread in Nature, diverse in purpose

2014 ◽  
Vol 56 ◽  
pp. 207-219 ◽  
Author(s):  
Chi L.L. Pham ◽  
Ann H. Kwan ◽  
Margaret Sunde
Keyword(s):  
Spider Silk ◽  
Epigenetic Inheritance ◽  
Fibrillar Structure ◽  
Cytoplasmic Polyadenylation ◽  
Functional Amyloid ◽  
Interacting Protein ◽  
Diverse Range ◽  
Element Binding Protein ◽  
Functional Amyloids ◽  
Micro Organisms

Amyloids are insoluble fibrillar protein deposits with an underlying cross-β structure initially discovered in the context of human diseases. However, it is now clear that the same fibrillar structure is used by many organisms, from bacteria to humans, in order to achieve a diverse range of biological functions. These functions include structure and protection (e.g. curli and chorion proteins, and insect and spider silk proteins), aiding interface transitions and cell–cell recognition (e.g. chaplins, rodlins and hydrophobins), protein control and storage (e.g. Microcin E492, modulins and PMEL), and epigenetic inheritance and memory [e.g. Sup35, Ure2p, HET-s and CPEB (cytoplasmic polyadenylation element-binding protein)]. As more examples of functional amyloid come to light, the list of roles associated with functional amyloids has continued to expand. More recently, amyloids have also been implicated in signal transduction [e.g. RIP1/RIP3 (receptor-interacting protein)] and perhaps in host defence [e.g. aDrs (anionic dermaseptin) peptide]. The present chapter discusses in detail functional amyloids that are used in Nature by micro-organisms, non-mammalian animals and mammals, including the biological roles that they play, their molecular composition and how they assemble, as well as the coping strategies that organisms have evolved to avoid the potential toxicity of functional amyloid.

Diverse Range

1972 ◽  
Vol 17 (4) ◽  
pp. 213-214
Author(s):  
WILLIAM F. BATTIG
Keyword(s):  
Diverse Range
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